>> it's scary. >> reporter: now, i called and left a message for youssef taleb's attorney, but i did get to talk to mr. taleb's housemate. what he has to say about these charges. back to you in the studio. >>> cold start to the week, wendy rieger. >> doug, when is summer going to arrive? >> we go through this every couple years in the month of may which is sometimes a lot colder. this happened to be one of those cold, wet months. take a look out there. what we saw this morning, these are the numbers you woke up to. 36 in gaithersburg. ft. meade at 34. 37 at dulles. that ties a record low temperature. to be that cold this late in the season, that's quite amazing. let's show you what's happening around the rest of the appearea. we have warmed. some beautiful weather across the northeast, even though we're still five to ten degrees below average. we'll take 67 and sunny any day of the week, but look what's coming our way. here we are back in d.c., but from omaha down towards the gulf, a lot of moisture. one more day of rain coming tomorrow. probably not just one, but two days ofai wednes

youssef taleb taught calculus in northern virginia community college in manassas. two women told police he sexually assaulted them in the classroom and they separately went to get help for math. he started teaching to school last august. his contract was not renewed >>> friends and the students at a northern california high ol loss of a former student. 18-year-old erika dunn was walking on the train tracks in burke, virginia, yesterday with two friends. they made it off the tracks in time, dunn did not. she graduated from lake bradock secondary school last year and today classmates were just hearing about the news. >> i remember she smiled a lot and that was always nice to see. >> it's not fair to be taken that young even after they graduate from this school. they're still one of us. >> police say they are still investigating the details of what happened. >>> police have identified the two southeast dc residents killed in yesterday afternoon's outburst of violence. they are 22-year-old tayvon cummings and 45-year-old tracey cooper. an andrea mccarren reports, four

youssef taleb, the math teacher she had last semester, is behind bars. he's charged with raping one female student and sexually assaulting another. >> i had him in the beginning of the spring. he was very professional. he was very supportive in class. it is very shocking to find out he was involved in this. >> reporter: a female student came forward on may 5th. her allegation, that two days earlier mr. taleb took her into an enclosed conference room to help her with several calculus problems. it was th assaultassaul assaulted her. he said back on march 22nd when she came to taleb for help he allegedly raped her inside a classroom. a second woman also came forward to say she had been sexually battered by the same teacher earlier in the semester. investigators say the two women attended different classes and did not know each other. police executed the search warrant at this fairfax townhome where taleb lived. they seized clothing, a cell phone, documents, and photos. this family has rented a room to taleb the last two years. >> i'm speechless. i woke up o